Machine for cleaning roving bobbins



J. A. LONZO. MACHINE FOR CLEANING' ROVING BOBBINS.

APPucAnoNmEo ma, 17, 19211 1,426,303, Patented Aug. 15, 1922,

2 SHEETS-SHEET r.

J. A. LoNzo. MACHINE FOR CLEANING ROVING BOBBINS. APPLICATION FILED FEB. I7, 1921.

PatenfedAug. 15, 1922; .a

2 SIVIEETS-SHEET 2`.

E,... -a i n e., l a L. 3 i

niacin'.ritt; l'Fort Citilatinas` Bovine Bonniits.

Application filed ibrary 17, 1921. `serial No. 445,610. 1

To all whom imag concewr: y

Ee it known that JosnrH A. LoNzo, a citizen or the United States, residing at Fitchburg, in the county of W'orcester and State otl Massachusetts, have invented a new and useful Machine for Cleaning Roving Bobbins, tot which the following is a speci'- iication,

Machines have been devised forl cleaning bobbins used in looms and such machines have reached a high kdegree ot success but on account ot the large lsize and thev cylindrical character of roving bobbins it has not been practical to convert the old devices into machines for removing the waste from such b'obbi'ns merely by increasing their-size or by making ordinary changes in the design which would occur to the machine designer;

The object ot' this invention is to provide a machine vwhich will effectivelyv clean the waste from such a bobbin that will be ca` pable of getting Athe bobbi-n-sin position, stripping them, and ejecting them without constant attention; lalso 'to provide for 'comparatively rapid operation and uniform and eii'ective action. `The invention involves various features and combinations -ot parts for securing these results.

Reference is to be had to the accompanying drawings in which stop ior the bobbin at the discharge end of the machine;

Fig. 6 is a side elevation of the series of stripping jaw elements and the immediate means for operating them;

Fig. 7 is an elevation of one of the strip'- pin jaws; and

l ig. 8 is a sectional view on the line 8-8 of Fig. 3, and showing the bobbin feeding hopper alone,

I have shown' the invention in a `form in which a trame 12, or rather the top ot' it, xis provided with a stationary hopper comprisL ing two parallel sides 2 held 'together lby upL rights 3 vat the sides and baclr yandhaving open sides at what are called the forward or discharge endibut this end isclose'd by one of the uprights 3. This open space iS to permit of the insertion ofvth'eheads of roving bobbins B.y The sides 2'are near enough together on the back of the hopper Specification of Letters atcnt; I Ptgntgd 15,

to prevent the insertion of the bobbin with its head in the `opposite position. The top of the hopper flares out to facilitate the reception oi' the bobhins. 'At the bottom the hopper is provided with a bottom 'plate 4 extending almost but not quite across' and `bolobins getting out lvor place longitudinally.

In 'the torni shown i the power isreceived on a'tight and loose pulley l() mounted on la shaftll carried in bearings `on a frame v12. This shaft lby a pair of gear-S13 drives a main shaft 14 extending thelen'gth otl the machine. On this shafty 14 there'are two cams 15 of the `same shape, -size and relative location. On `each of these rests a pivoted arm 16 which ifs held down on the cam by a spring 17 and is raised and lowered by the cai-n as the nrain shaft rotates.

Each arm 16 carries a lbracket 18to which is pivoted a twisted link 19 extending -upwardly therefrom andl 'adjnstably lixed by a bolt 20 and nut ina slot 21 inan arm 22 which is mounted on another arm 23'.- The bolt 2O can be adjusted at will along the/slot 21 to adjust the stroke. The a rmsli22 and 23 are shown atlrifght angles toeach other and constitute a bell crank pivoted on a stand 24. Pivotally connected with the 23 is a horizontal link 25 from which eX- tends down an arm 26 anda `brace "27, the three elements 25, 26, and 2701i the' left hand sideV of the machine 'constitute Aa rigid frame which is capable of moving horizontally. rI'his motion is assuredfbyanother link 28 pivoted to the `other end of the link "25 and pivotallv supported on a bracket 29 lined iin position at the top of the` frame. The bottom of the links'23 `and 28 are pivotedat fixed points and connected by the loifrgitudinal link 25 which is 'of the same length as the distancebetween the pivots. {Conse quently, this insures a parallel motion.-

I have shown two of these structures, one

on each side of the machine. The one on the right is simpler as it does not contain all the elements mentioned.

Connected with the end of the arm 23 is a cross piece 32 to which four springs 30 are connected. Each spring at its opposite end is connected with the top of a lever 3l pivoted on the same pivot preferably as the link 28. Its lower' end is the active part which controls other elements as will appear.

Although 1 have described only one of these structures it is obvious with slight changes the one on the right is substantially the same as the one on'the left. 1t will be obvious that the rotation of the two cams l5 results in the motion of the two frames of which the links 25 constitute the main portion with a parallel motion. It will be understood also that as it moves the several levers 31 are oscillated also.

On the main shaft 14 there is a third cam 35 which bears on a metal plate 36 on the edge of a lever 37. This is pivoted on a stud 38 at the bottom of the machine. Pivotally connected with this lever are two links 39 at the top of the machine which are pivotally connected with a pusher rod 4() located horizontally in a guide 41 on a bracket 42a secured to the top of the machine frame. The lever 37 is held 'back against the cam 35 by a spring 42. The rotation of the shaft 14 causes the lever 37 and consequently the pusher rod 40 to be forced forward quickly and withdrawn even more quickly by the spring.

On the top of the frame is a bracket 43 on which is pivotally mounted a lever 44 having a depending end 45 that is rounded at a point back of the bracket 43. Its extreme end is drawn down on top of the frame under normal conditions by a spring 46. On the top of the lever 37 there is a roll 47 which engages the rounded end of the lever 44 on the backward motion of the lever 37 and swings it upwardly about its' pivot on the bracket 43. This lever is provided with an extension 48 and with two wires 49 and 50 rigidly fixed to the supporting and operating elements 44 and 48 respectively. They are offset from these ele-- ments toward the hopper and normally eX- tend down near the open side of the hopper. When the lever 37 moves way back they are lowered to a position in which they engage the lowest bobbin in the hopper as it tends to emerge therefrom and hold it in the bottom of the hopper. Then when the lever 37 moves beyond a certain point toward the front a spring 46 draws them up and this bottom bobbin is released and drops down. At this instant a pair of wires located on the bottoms of the two side frames 26 are projected inwardly into the position shown there.

The feed of the bobbin out of the hopper is also controlled in part by a pair of wires 53 carried by the right hand frame 25 and movable forward and back with the same. There is a stop 54 for preventing bobbins from going over too far. l

The bobbins are guided down into proper position by two pairs of wires 56 fxedly mounted on the frame l2 and projecting up at the front and rear of the hopper.

When the bobbin gets down into the position shown in Fig. 3 and it is time for the plunger 40 to move forward and force the bobbin through, the frames 25 work to swing back the two sets of levers 31 at the top. This forces them inwardly at the bottom about their pivots. As they project through slots 57 they force forward acorresponding number of jaws 58. These slots 57 are formed by spacing apart brackets or projections 59 on the jaws. These jaws are mounted to slide in two opposite boxes having a bottom 60 and a topy 6l. On their forward ends they .have the steel jaws proper 62 secured to them. These jaws have curved operating surfaces 63 and they are located at a slight angle to a plane exactly transverse to the jaws 58. The consequence is that they project in against the surface of the bobbin and strip the waste therefrom when the bobbin is pushed forward between them.

As the bobbin is forced forward it engages a stop 65 which is pivoted on an axis 66 and provided with an arm 67. This arm is connected with a stationary part of the frame by a spring 68 that normally draws the stop up into the normal position shown in dotted lines in Fig. 5 but is capable of yielding into the position shown in full lines in Fig. 5 for letting the bobbin through. This stop merely holds a bobbin when it islet down from the hopper and until it is positively pushed through by the plunger 40. A fixed guide 69 is located just behind it for supporting the bobbin as it moves.

In the operation of the device the hopper is supplied with roving bobbins either by hand or automatically. These bobbins are fed down one at a time all in the same posi-y tion in the following manner.

First, the wires 53 which engage the bottom bobbin and normally holdit in the position A in Fig. 3 are withdrawn as the two frames 25 draw back. The two wires 49 and 50 prevent the bobbin A from moving entirely out of the hopper although it starts out. These wires are necessary'because the wires 53 cannot control the movement of the bobbin throughout the entire motion of the frame 25. Now the frames 25 move forward and the wires 53 pass in over the bobbin in question while the wires 52 pass into the position shown in Fig. 3 so as to receive the rst bobbin as the wires *natascia 49 and 50 move down. Now the frames 25 again Slide back and the 'springs `30 -fo'rce the several levers 31 from the position s h'ownin Fig. 3 to thatshown -in F '1. This for'ces all the jaws 62 .inwardly "and they vengage the 'sides 'of the bobbin at several poi'nts. This action is limitedby 'the stops adjustable for :differentsi'zed bebbins. Now the :cam 35 moves from the position shown in Fig. 2 forward and idownward and positively moves the pusher 'rod 4'() inwardly as indicated in Fig.l 4 thus causing the bobbin to mov'e forward between the jaws. As these jaws are held inwardly against the bobbin the pressure of the springs 30 they exert a yielding pressure on its sides while it moves by them and takev up the waste leaving it on the plunger as indicated in Fig. 4. At the end of its stroke the plunger forces the bobbin through the` last pair of jaws and allows it to drop out of the machine over the yielding stop 65, thus positively ejecting itin fully cleaned condition. It moves back and drops the waste in front of the bearing 41 through which it is withdrawn.

As the jaws are all independently forced toward the bobbin by individual springs, an accumulation of too much roving to be stripped will merely cause the first jaw to pass over it taking only part of it and the other jaws will have a chance to receive the balance. There is little danger of breakage from this cause.

Although I have illustrated and described only a single form of the invention and shown it as applied only to a single type of bobbin, I am aware of the fact that changes can be made in the details of construction without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited to all of the details of construction herein shown and described or to the particular shape of bobbin illustrated but what I do claim is:

l. In a machine for cleaning bobbins, the combination with a plurality of pairs of jaws arranged in a series, one pair adapted to engage a bobbin near one end, another pair near the other end and the others at several points along it and to hold it against side motion at both ends, and yielding means trom,y and yielding means'e drawing the termination with gplarahty orqpairs of jaws, means for guiding 'saidl jaws' A to 'slide in tv plurality of planes, and yielding means v'for forcing them toward each other-to grip @ha sabbia, for 'horizontal pusher-rea at far roi-eingsaia wahenzcmafuy against cheeaof abstain heid tysaia `to push it through them and eject it there- 'pusher rod back. 1 v I ao 4. In a roving bobbin cleaning machine, the combination of a plurality of pairs of sliding jaws oppositelylocated, a lever for operating each jaw, loosely connected therewith and mounted in the plane of its jaw and above it, a separate spring for moving each lever to force its jaw in, and positive means having an adjustable stroke for moving said levers out simultaneously.

5. In a bobbin cleaning machine, the oombination with a plurality of jaws, a lever for operating each jaw, a spring for moving each lever to force-its jaw in, means for moving ysaid springs out simultaneously, and yielding means for moving the springs inward bodily.

6. Ina bobbin cleaning machine, the combination with a plurality of opposite pairs of spring pressed roving removing jaws,

means for closing'them, and means for forc- 100 ing a bobbin to move through the several pairs to strip the roving therefrom, of a hopper above the jaws for receiving the bobbins, said hopper having sides arranged at one end near together and terminating short of the other end for preventing a roving bobbin being put intoy it wrongv end to.

` 7. In a bobbin cleaning machine, the combination with two opposite sets of spring. pressed jaws arranged in pairs, means for closing each pair, means for forcing a bohbin to move through the several pairs of jaws, of a hopper above the jaws for receiving the bobbins, said hopper being open at one side, and means operated by the bobbin forcing means for periodically preventing the bobbins from dropping out through the open side.

8. In a bobbin cleaning machine, the combination with two opposite sets of spring pressed jaws, each set comprising a plurality of parallel jaws, means for closing the jaws, means for forcing a bobbin to move through the several pairs of jaws, of a hopper above the jaws for receiving the bobbins, said hopper being open at one side, and two alternatelyoperating means for holding the bobbins back in the hopper, one operated by the bobbinv forcing means and the other by the jaw closing means. v

' 9. In a bobbin cleaning machine, the combination with two opposite sets of spring pressed jaws, means for closing them, means for forcing a bobbin to move between the two sets, yof a hopper above the jaws, but at one side thereof, for receiving the bobbins, said hopper being open at `one side, means operated by the bobbin forcing means for periodically preventing the bobbins from dropping out through the open side, and means movable with the jaws for supporting a bobbin between the two sets of jaws. l

l 10. In a machine for cleaning bobbins, the combination with a plurality of pairs of jaws and yielding means for forcing them towardl each other to grip the bobbin, of a horizontal pusher rod, means for forcing said rodhorizontally against the end of a bobbin held by said jaws to push it through them and eject it therefrom, and a yielding forwardly movable stop for engaging the forward end of a bobbin between the jaws and holding it until the pusher acts, said stop'being capableof yielding to the positive action of the ypusher rod to allow the bobbins to be pushed out. i

. In testimony whereof I have hereunto aiiixed my signature.

vJOSEPH A. LONZO. 

